This happens when I try to upload videos using Video to Facebook or FriendCaster Pro from my Droid 4. If I upload them using my computer, they work. This just started today. I tried uploading from both the microSD card and the phone's internal storage with the same problem. I am able to upload videos to YouTube from the phone's internal memory and the videos play, so they are not corrupt. I have tried rebooting the phone and still get the problem. addendum: I just uploaded a video with the official Android Facebook app and it was processed successfully. This leads me to wonder if Facebook isn't blocking videos uploaded by third party apps. I hope this isn't the case because I really prefer Video to Facebook and FriendCaster Pro to the official app.